I'm afraid of reducing polyamory from a state of unlimited possibilty to A Stance. "We, the Polyamorists, demand..." shudder...

None of the advocates for the idea of a national coming out day for polyamorists are saying either that there is a need for "A Stance" of the sort which worries you, nor do they want to make any demands. What they believe will help all who live or wish to live polyamorously is greater visibility and an opportunity to dramatically increase public edjucation of the polyamory option and how people successfully live it.